The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 1502
Hash: 11a6a3165f6423eb118d70647aea2bcba4db3f4a5e633be8320b4df862a04856
Previous block: 348f84d87fa26332acd1aad1b9aad386ad1ad4567381dc75423b8586443ed730
Next block: 6a42bd1d8d42a64b00cd0596096d7fcacbf83fd95e4da093a0cc431416e40905
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697658
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: a0aa012dc3c8500fc16baba0dfb94d34ad3e9db9b64de946deea2baba0dd0c01
Median time: 1718697657
Difficulty: 4.656542373906925e-10
Confirmations: 742
Chainwork: 0000000000000000000000000000000000000000000000000000000000000bbe
Bits: 207fffff